I live in New Hampshire and have bought 3 pairs of skis in the last year from SkiTrader.com. I've always spoken with Sean who is interested in helping you choose the right ski as well as selling you skis. His prices have almost always beaten the competition's. Delivery has been 1 or 2 days.
If, however, you are wary of those Canadians, then try ProctorJones.com. They have extremely competitive prices and are a solid company.
There are also Kitsapsports.com and Skidealer.com for comparison.